Coupling enhancement of rectangular waveguide fed hemispherical dielectric resonator antenna using step junction

A novel technique for the coupling enhancement of a rectangular waveguide fed dielectric resonator antenna is proposed in this article. Enhanced coupling is achieved by inserting a step waveguide junction between the rectangular waveguide and ground plane. The step provides the capacitive susceptanc...

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Bibliographic Details
Main Authors: Jasmine, P. M., Rekha, T. K., Ansha, K. K., Varghese, Sheeba
Format: Conference Proceeding
Language:English
Subjects:
Coupling
Cross polarization
Dielectrics
Ground plane
Radio antennas
Rectangular waveguides
Resonant frequencies
Resonators
Susceptance
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Summary:A novel technique for the coupling enhancement of a rectangular waveguide fed dielectric resonator antenna is proposed in this article. Enhanced coupling is achieved by inserting a step waveguide junction between the rectangular waveguide and ground plane. The step provides the capacitive susceptance required for the enhanced coupling. The measured resonant frequency of the step junction coupled waveguide fed Dielectric Resonator Antenna is 9.22 GHz. The proposed antenna provides more than 98% coupling and a 10 dB impedance bandwidth of 14.1%. Symmetrical broadside radiation patterns with low cross polarization levels are maintained in both the planes around the resonant frequency.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0138571